Sennheiser has been creating some of the most ambitious headphone designs for decades, and the Orpheus HE 1 takes that to a new level. To get the best of both worlds, Sennheiser uses tube and resister amplifiers with a patent-pending circuit design that gives the lowest distortion ever measured in a sound reproduction system. The housing is crafted from a single block of Carrara marble, the same type used for Michelangelo's David, and weighs over 60 pounds! With the push of a single button, the normally flush controls are exposed, the eight vacuum tubes are raised, and the lid to the headphones automatically opens. The Orpheus is a very complex work of art that takes high-end to a degree rarely seen in headphone technology.